Stockholders' Equity (Schedule of Treasury Stock) (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended			191 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2023
Stockholders' Equity Note [Abstract]
Shares repurchased	0	0	6,556,378	69,324,429
Average purchase price per share	$ 0	$ 0	$ 152.53	$ 83.71
Amount spent on repurchased shares (in $ millions)	$ 0	$ 0	$ 1,000	$ 5,803
Aggregate Board of Directors repurchase authorizations during the period	0	$ 0	$ 1,000
Share repurchase plan, authorized repurchase amount	$ 6,866			$ 6,866